/*  
  -- The Lime II Project -- 

  A tuplespaces-based middleware for coordinating agents and mobile hosts.
  Copyright (C) 2005.
  Gian Pietro Picco, Amy L. Murphy, Lorenzo Bellini.

  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.

  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  Lesser General Public License for more details.

  You should have received this copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 
*/

package lime2;

/**
 * Holds the generic result of an operation and allows to synchronize on it. Synchronization is very important: we
 * must be sure that the result has been set before we access it.
 * 
 * @author Gian Pietro Picco
 * @author Amy Murphy
 * @author Lorenzo Bellini
 */

public class Result 
{
 // the result (please note that it is initialized to null)	
 private Object obj = null;

 /** 
  * The lock for synchronizing on the result.
  */
 public Lock lock = new Lock();
 
 /**
  * Returns the generic result.
  * 
  * @return generic result
  */ 
 public Object get() { return obj; }
 
 /**
  * Sets the generic result.
  * 
  * @param obj generic result
  */
 public void set(Object obj) { this.obj = obj; }

}
